Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Braslyn Ltd.
2. Date of Event Requiring Statement (Month/Day/Year)
01/04/2016
3. Issuer Name and Ticker or Trading Symbol
Mirati Therapeutics, Inc. [MRTX]
(Last)
(First)
(Middle)
C/O CAY HOUSE, P.O. BOX N-7776, E.P. TAYLOR DRIVE LYFORD CAY
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW PROVIDENCE, C5 
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 522,500
D (1)
 
Common Stock 2,023,232
D (2)
 
Common Stock 429,340
D (3)
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Warrant (right to purchase)   (4) 11/21/2017 Common Stock 189,780 $ 8.7 D (2)  
Warrant (right to purchase)   (4) 11/21/2017 Common Stock 78,186 $ 8.7 D (5)  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Braslyn Ltd.
C/O CAY HOUSE, P.O. BOX N-7776
E.P. TAYLOR DRIVE LYFORD CAY
NEW PROVIDENCE, C5 
    X    
Boxer Asset Management Inc.
C/O CAY HOUSE P.O. BOX N-7776
E.P. TAYLOR DRIVE LYFORD CAY
NEW PROVIDENCE, C5 
    X    
LEWIS JOSEPH
C/O CAY HOUSE P.O. BOX N-7776
E.P. TAYLOR DRIVE LYFORD CAY
NEW PROVIDENCE, C5 
    X    
Boxer Capital, LLC
440 STEVENS AVE, SUITE 100
SOLANA BEACH, CA 92075
    X    
MVA Investors, LLC
440 STEVENS AVE, SUITE 100
SOLANA BEACH, CA 92075
    X    
Berkley Capital Management Ltd.
440 STEVENS AVE, SUITE 100
SOLANA BEACH, CA 92075
    X    

Signatures

Boxer Capital, LLC, By: /s/ Aaron Davis, **Aaron Davis 01/04/2016
**Signature of Reporting Person Date

Boxer Asset Management Inc., By: /s/ Jefferson R. Voss, **Jefferson R. Voss 01/04/2016
**Signature of Reporting Person Date

MVA Investors, LLC, By: /s/ Aaron Davis, **Aaron Davis 01/04/2016
**Signature of Reporting Person Date

Joseph Lewis, /s/ Joseph Lewis, **Joseph Lewis 01/04/2016
**Signature of Reporting Person Date

Berkley Capital Management Ltd., By: /s/ Jefferson R. Voss, **Jefferson R. Voss 01/04/2016
**Signature of Reporting Person Date

Braslyn Ltd., By: /s/ Jefferson Voss, **Jefferson Voss 01/04/2016
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These securities are owned directly by Braslyn Ltd. ("Braslyn"), which may be deemed to be a member of a "group" for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, consisting of (i) Boxer Capital, LLC ("Boxer Capital"), (ii) Boxer Asset Management Inc. ("Boxer Management"), (iii) MVA Investors, LLC ("MVA Investors"), (iv) Berkley Capital Management Ltd. ("Berkley Capital"), (v) Braslyn and (vi) Joe Lewis (collectively, the "Boxer Group"), and indirectly by Joe Lewis. Joe Lewis is the sole indirect owner of and controls Braslyn. On January 4, 2016, Berkley Capital transferred certain of its assets, including all of its shares of common stock of the issuer, to Braslyn for no consideration as part of an internal reorganization.
(2) These securities are owned directly by Boxer Capital, and indirectly by Boxer Management and Joe Lewis, by virtue of their ownership in Boxer Capital.
(3) These securities are owned directly and solely by MVA Investors, which has sole voting and dispositive power with respect to these securities. Each member of the Boxer Group other than MVA Investors disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.
(4) The warrants are not exercisable to the extent that, following exercise of such warrants, the warrant holder would beneficially own more than 19.99% of the issuer's common stock.
(5) These securities are owned directly and solely by MVA Investors. Each member of the Boxer Group other than MVA Investors disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.

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